Home / 228,022.20-342,000.90-78,269.40

Finding the Fourth Proportional to 228,022.20, 342,000.90 and 78,269.40

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Solution

The fourth proportional to 228,022.20, 342,000.90 and 78,269.40 is: 117,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,022.20 : 342,000.90 = 78,269.40 : x
  2. Step 2: Convert to fraction form
    228,022.20/342,000.90 = 78,269.40/x
  3. Step 3: Cross multiply
    228,022.20x = 342,000.90 × 78,269.40
  4. Step 4: Simplify right side
    228,022.20x = 26,768,205,242.46
  5. Step 5: Solve for x
    x = 26,768,205,242.46/228,022.20
  6. Step 6: Final answer
    x = 117,392.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.